/******************************************************************************
 * Copyright (c) 2025 AISS Group at Harbin Institute of Technology. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
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 *****************************************************************************/

#pragma once

#include <asnumpy/utils/npu_array.hpp>
#include <pybind11/numpy.h>
#include <stdexcept>

namespace asnumpy {
/**
 * @brief Compute the normalized sinc function element-wise on the input array.
 *
 * Uses NPU operator aclnnSinc to compute:
 *     sinc(x) = sin(pi * x) / (pi * x), with sinc(0) = 1.
 *
 * @param x Input array.
 * @return NPUArray Output array with sinc applied element-wise.
 * @throws std::runtime_error If the ACL operator or memory allocation fails.
 */
NPUArray Sinc(const NPUArray& x, std::optional<py::dtype> dtype = std::nullopt);

}